MRI quiz brain questions Flashcards
what area does the external carotid artery supply blood?
face
what area does the internal carotid artery supply blood?
anterior brain
what area does the vertebral artery supply blood?
posterior brain
where does the common carotid artery bifercate?
C3-C4 disc level
What are three types of resolution seen in MR?
-spatial
-contrast
Temporal
What is temporal resolution?
Ability to distinguish structural differences over time
What is spatial resolution?
Ability to visualize small structures
What is contrast resolution?
Ability to distinguish signal differences in adjacent structures.
Which layer of the meninges is the hard, fibrous covering that adheres to the inner table of the skull?
Dura Mater
Enlarged subarachnoid spaces located particularly around the base of the brain are called…
Cisterns
Dips or grooves between the superficial bulges on the surface of the cerebrum are called…
Sulci…Sink
All the following techniques should be employed except___ when imaging the pituitary gland.
a. Smal FOV
b. thin slices
c. fat saturation
d. increase in matrix
Fat saturation
In order to visualize the internal auditory canal, high resolution images are acquired in which planes?
Axial and coronal
In order to visualize the pituitary gland, which planes are most useful?
Sagittal and coronal
Describe the appearance of a subacute intracranial hemorrhage (greater than 7 days).
High signal on both T1 and T2 weighted images
On a sagittal view of the brain which sinus is visualized as anterior to the other? ethmoid and sphenoid
ethmoid
Due to the low development of myelin in pediatric patients, it is very difficult to define gray/white matter structures. Which pulse sequence should be employed?
IR (inversion recovery)
When scanning a patient’s head, the quadrature head coil is most likely used. this configuration indicates that current is transmitted and received through ___ channels or ports
two
What structures make up the lentiform nucleus?
Putamen and globus pallidus
Which of the following tumors grow slowly and originate from arachnoid tissue? they are routinely hypo-intense on T1-weighted images
Meningioma
Which structures within the brain highlight after contrast due to then being outside the BBB?
Falx cerebri Pineal gland Pituitary gland/hypophysis Infundibulum Choroid plexus
